From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The machining and heat treatment process for cylinders supplied in a rough condition.
| Identifier | ExFiles\Box 103\4\ scan0088 | |
| Date | 23th September 1931 | |
| - 2 - BY.11/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 23.9.31. The cylinders under (1), (2) and (3) have been supplied in the rough condition, and will have to be machined. The set under No. 2 will have to be heat treated after machining to such a condition that a grinding allowance is left on the inside face. We will supply the figures for this heat treatment later. By BY.{R.W. Bailey - Chief Engineer} | ||